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Patented Aug. I6, |898. S. J., L. '& I. NEUGROSCHL & C. WALTERSV.

ffy/wkn? lo ma wym 3f {wwd ma, fr wmZw-Swm/ LETTER CLASP.

(Apphcatxon led Sept 18, 1897 THE MORRIS PTVERS CO., PNOTO-LITHO.. WASHINGTON, D. C.

(No Model.)

NITED STATES PATENT OFFICE.

SAMUEL J. NEUGROSOI-IL, LEONEUGROSCHL, ISRAEL NEUGROSCHL, AND CHARLES WALTERS, OF NEW YORK, N. Y.

LETTER-C LAS P.

SPECIFICATION forming part of Letters Patent No. 609,208, dated August 16, 1898. Application filed September 16, 1897. Serial No. 651,843. (No model.)

To LtZZ whom it may concern:

Be it known that we, SAMUEL J. NEU- eEosoIIL, LEO NEUGEoscHL, and ISRAEL NEUGROSCHL, citizens of the United States, and CHARLES WALTERs, a `citizen of Great Britain, all being residents of New York city, county and State of New York, have invented an Improved. Letter-Clasp, of which the following is a specification.

This invention relates to a clasp of simple and durable construction and designed for quickly and firmly assembling letters and other papers into packages.

In the accompanying drawings, Figure 1 is aperspective View off our improved letterclasp. Fig. 2 is a side view of the same Fig. 3, a cross-section on line 8 3, Fig. l; and Fig. 4, a perspective view of the spring c.

The letters A A represent a pair of square wire frames that constitute the jaws of the clasp and are arranged to turn one within the other. To the center of each of the end bars ct of the frames there is secured a pocket b, which is formed by coiling one end of a sheetmetal strip around the end bar and coiling up the other or free end of such strip into a tube.

Through a transverse perforation of the pockets b of each pair ofradjoining bars a extends the transverse arm c of a duplex helical spring c. This spring is composed of two parallel helical windings connected by the crossarm c' and terminating in hook-shaped ends c2, Fig. Il.

To assemble the parts, the wire of a spring havinga single winding is passed through the pockets b, and then the second winding is formed, while the ends of the spring are secured to the frames A by slipping its hooks c2 into the pockets b.

It will be seen that in our letter-clasp the body of the spring forms the pivot for the jaws, and that in this Way a very simple and reliable spring connection bet-Ween the parts is effected. I y

In use the jaws of the clasp are opened and the letters or other matter inserted, when the jaws upon being released will close rmly upon the same to connect them in the form of a package.

What we claim is- 1. A letterclasp composed of a pair of frames, and duplex helical springs secured thereto and forming the pivots for the frames, substantially as specified.

2. A letter clasp composed of' a pair of frames, pockets secured to the end bars thereof, and duplex helical springs engaging the pockets and having center cross-arms that pivotally connect the frames, substantially as specified.

S. J. NEUGROSCHL. LEO NEUGROSCI-IL. ISRAEL NEUGROSCHL. C. WALTERS.

Witnesses:

F. v. BRIEsEN, WILLIAM MILLER. 

